29 Jun '12, 5pm

Science-y tweet: Why sweating saves the day & the best explanation of RH I've read to date via @bglive

Science-y tweet: Why sweating saves the day & the best explanation of RH I've read to date via @bglive

BackPage Primer from Environmental Building News Dry-Bulb? Wet-Bulb? What’s the Difference? Although the acts of melting ice and boiling water are mundane occurrences, the underlying physics are not so simple. The illustration shows what happens to the temperature of water as heat is added (Btu per pound on the horizontal axis). The graph shows plateaus at 32ºF and 212ºF. Why does the temperature hold steady, even as heat is being added, right at water’s melting and boiling points? The temperature holds steady because it takes so much energy to accomplish the phase changes. Only when the last molecule of water has changed phase does the temperature of the material rise. All the energy it takes to accomplish phase changes is hidden. We call the energy expressed in the sloped sections of the graph sensible heat because a thermometer can “sense” this heat. We call the energy ...

Full article: http://www.buildinggreen.com/auth/article.cfm/2012/6/29/D...

Tweets

Date#strftime - see also – similar methods #ruby

apidock.com 28 Jun '12, 6pm

m blank-padded ( 1..12) %-m no-padded (1..12) %B - The full month name (``January'') %^B uppercased (``JANUARY'') %b - The...

Saves the Day, Can Nick Symmonds lead track & field athletes to the Promised Land? by Jon Gugala, note by Larry

Saves the Day, Can Nick Symmonds lead track & f...

runblogrun.com 25 Jun '12, 9pm

Saves the Day Can Nick Symmonds lead track and field athletes to the Promised Land? by Jon Gugala It's Friday night. Nick ...

5 on Friday: Marketing via Mobile, Social, and ...

networksolutions.com 29 Jun '12, 10pm

Want to use mobile and social to build your business and grow your community? Want to add QR codes or how-to videos to you...

Water Bottle Keeps Cool by "Sweating"

Water Bottle Keeps Cool by "Sweating"

treehugger.com 23 Jun '12, 9am

For all of the grossness associated with sweating, it's a vital function for dealing with hot climates. As perspiration ev...